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-rw-r--r--src/sysdep.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sysdep.c b/src/sysdep.c
index 901edb85e67..e111c9c35ad 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1102,7 +1102,7 @@ reset_sys_modes ()
reset_sigio ();
#endif /* BSD4_1 */
- while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR)
+ while (! EMACS_SET_TTY (input_fd, &old_tty, 0) && errno == EINTR)
;
#ifdef AIX